# HIIT Interval Timer & Tracker vs Kinship HK

The clearest difference is in-app purchases: Kinship HK at none against HIIT Interval Timer & Tracker's 4. Kinship HK also leads on update cadence (every 9 days vs every 3 weeks). HIIT Interval Timer & Tracker's advantage is iOS requirement (12.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. HIIT Interval Timer & Tracker sells 4 in-app purchases, starting at $1.99 per 7 days. Kinship HK asks for nothing beyond the download.

HIIT Interval Timer & Tracker ships an update every 3 weeks, Kinship HK every 9 days. The most recent releases landed on October 13, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | HIIT Interval Timer & Tracker | Kinship HK |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Size | 57 MB | 85 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Ech-Chafai Kadri](https://appshunter.io/developer/1789520174) | [Kinship Group Limited](https://appshunter.io/developer/6798192550) |

## What reviewers say

### HIIT Interval Timer & Tracker

[App page](https://appshunter.io/ios/app/hiit-interval-timer-and-tracker/id6742692409)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro | $1.99 | per 7 days |
| Monthly Pro | $4.99 | per month |
| Yearly Pro | $19.99 | per year |
| Pro Access | $19.99 | one-time |


### Kinship HK

[App page](https://appshunter.io/ios/app/kinship-hk/id6798192548)

**Features:** macOS Compatibility, Apple Wallet, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is HIIT Interval Timer & Tracker free?

HIIT Interval Timer & Tracker is free to download, with in-app purchases available.

### Is Kinship HK free?

Kinship HK is free to download, with no in-app purchases.

### Do HIIT Interval Timer & Tracker or Kinship HK have ads?

Neither HIIT Interval Timer & Tracker nor Kinship HK shows ads.

### Which is updated more often, HIIT Interval Timer & Tracker or Kinship HK?

HIIT Interval Timer & Tracker ships an update every 3 weeks, and Kinship HK every 9 days. Most recently, HIIT Interval Timer & Tracker was updated on October 13, 2026 and Kinship HK on October 1, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*